There isn't any benefit to making use of legacy address. However if the company you're utilizing don’t assist SegWit/Bech32 withdrawals then you may want to use legacy address. Afterwards you are able to transfer BTC from the legacy addresses to SegWit that starts with bc1. wallet/createaccountAPI to create a transaction https://pasteldirectory.com/listings12702754/5-simple-techniques-for-trx-generatot